Dr. Xavier Guillermo Ortiz, MD
- Medicare services, 2022
- 43
- Part D claims, 2024
- 152
- Hospital affiliations
- 1
- Industry payments
- $413
- Medical group
- 1
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ortiz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Xavier Guillermo Ortiz is an OB-GYN in Vallejo, California
Dr. Ortiz practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Dr. Ortiz's NPI, 1952304859, was assigned on May 24, 2005. Dr. Ortiz graduated from College of Human Medicine - Grand Rapids in 1991. Dr. Ortiz holds California license G148485.
- NPI
- 1952304859NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587682711
- NPI enumeration date
- May 24, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 651-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Xavier Guillermo Ortiz practices at Vallejo Medical Center in Vallejo, California
Dr. Ortiz's primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Dr. Xavier Guillermo Ortiz is affiliated with 3 sites of care and 1 medical group
Dr. Ortiz's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Ortiz to 1 more home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Xavier Guillermo Ortiz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ortiz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Xavier Guillermo Ortiz is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Ortiz's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Ortiz is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Ortiz's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists menopause and UTI among the conditions Dr. Ortiz treats.
OB-GYNs near Dr. Ortiz
Counts of OB-GYNs with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Xavier Guillermo Ortiz billed Medicare for 43 services in 2022
CMS data shows 43 Medicare services from Dr. Ortiz across 2 procedure codes in 2022. Medicare paid $2,112 for them. Every service was in an office.
Dr. Ortiz's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 252022: 2212%
- Other services
- 2021: 242022: 2113%
Dr. Ortiz compared with the California median for OB-GYNs, 2022
- Dr. Ortiz
- California median
- Medicare services
- 43vs 5826% below
- Part D claims
- 80vs 352.3 times
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Ortiz's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ortiz and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Xavier Guillermo Ortiz's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Ortiz's median patient age at 35, with 99% women.
Dr. Ortiz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women99%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Xavier Guillermo Ortiz wrote 152 Medicare Part D claims in 2024
In 2024, Dr. Ortiz wrote 152 Medicare Part D claims for 85 patients. 91% of them were for generic drugs. CMS names the drug for 80 of them, across 5 drugs with 11 or more claims each, at $2,001 in total drug cost. In 2023, CMS named 49 claims across 3 drugs.
Dr. Ortiz's Part D claims by kind of drug, 2024
- Generic138 claims91%
- Brand-name14 claims9%
Dr. Ortiz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ortiz's Part D claims, 2024
- Antibiotics18%27 of 152 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 492024: 8063%
Drugs named by CMS: 5 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Xavier Guillermo Ortiz takes part in Medicare
Dr. Ortiz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Xavier Guillermo Ortiz received $413 in industry payments from 2016 to 2020
CMS Open Payments shows 11 general payments to Dr. Ortiz from 10 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $116.
General payments to Dr. Ortiz by program year, 2016 to 2020
Companies that paid Dr. Ortiz the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Xavier Guillermo Ortiz has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Ortiz, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Ortiz
- 2013
- CMS Stage 1 EHR
- 2011
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Xavier Guillermo Ortiz graduated from College of Human Medicine - Grand Rapids
Dr. Ortiz graduated from College of Human Medicine - Grand Rapids in 1991. Dr. Ortiz is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Xavier Guillermo Ortiz accepts plans from 3 insurance carriers
Dr. Ortiz is in network with 3 carriers, including Kaiser Permanente, CareSource and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Kaiser Permanente
- CareSource
- CMS Medicare
Plan types Dr. Ortiz accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Xavier Guillermo Ortiz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Xavier Guillermo Ortiz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Xavier Guillermo Ortiz's NPI number?
Dr. Xavier Guillermo Ortiz's NPI number is 1952304859. It was assigned on May 24, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Xavier Guillermo Ortiz?
Dr. Xavier Guillermo Ortiz is an OB-GYN in Vallejo, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Xavier Guillermo Ortiz practice?
Dr. Ortiz practices at 975 Sereno Dr, Vallejo, CA 94589. Dr. Ortiz's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Dr. Ortiz to 1 home health agency and 1 hospice.
What is Dr. Xavier Guillermo Ortiz's office phone number?
The practice phone on file for Dr. Ortiz is (707) 651-1000.
What is Dr. Xavier Guillermo Ortiz's medical license number?
Dr. Ortiz holds California license G148485, one of the licenses on file in 2 states.
Which states has Dr. Xavier Guillermo Ortiz been licensed in?
Dmand AI has state licenses on file for Dr. Ortiz in California (2017 to 2026) and Ohio (1992 to 2026).
Which hospitals is Dr. Xavier Guillermo Ortiz affiliated with?
Dr. Ortiz practices at Vallejo Medical Center in Vallejo, California.
What medical group is Dr. Xavier Guillermo Ortiz part of?
Dr. Ortiz is linked to The Permanente Medical Group, Inc.
Does Dr. Xavier Guillermo Ortiz accept Medicare?
Yes. CMS data shows Dr. Ortiz billed Medicare for 43 services in 2022, and Dr. Ortiz accepts Medicare assignment.
Is Dr. Xavier Guillermo Ortiz board certified?
Yes. Dr. Ortiz is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Show 6 more questionsShow fewer questions
What services does Dr. Xavier Guillermo Ortiz bill to Medicare?
In 2022, Dr. Ortiz's most billed Medicare services were office visit, established patient (99213) and medicare service (G0101).
Where did Dr. Xavier Guillermo Ortiz go to medical school?
Dr. Ortiz graduated from College of Human Medicine - Grand Rapids in 1991.
What drugs does Dr. Xavier Guillermo Ortiz prescribe most?
In 2024 Medicare Part D data, Dr. Ortiz's most prescribed drugs by claims were Estradiol, Clobetasol Propionate and Progesterone.
Has Dr. Xavier Guillermo Ortiz received payments from drug or device companies?
CMS Open Payments shows $413 in general payments to Dr. Ortiz from 10 companies from 2016 to 2020. The largest total came from Abbvie Inc.
How long has Dr. Xavier Guillermo Ortiz been practicing?
Dr. Ortiz graduated from medical school in 1991, 35 years ago.
What insurance does Dr. Xavier Guillermo Ortiz accept?
Dr. Ortiz is in network with 3 carriers, including Kaiser Permanente, CareSource and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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